Certain work is proposed to be completed in 54 days with 30 men. But after 36 days it is observed that only 40% of the work is completed. How many more men are required to complete the work in stipulated time ?
Total days=54, Work completed with 30 men in 36 days=40%=2/5
Remaining work=1 - 2/5=3/5, Remaining days=54-36=18
Let 'x' extra men are employed to finish the work, then total new men = (30+x)
According to Men, days & work rule, 30 Men*36 Days / (2/5) Work = (30+x) Men*18 Days / (3/5) Work
30*36 / (2/5) = (30+x)*18 / (3/5)
⇒ x=60
.'. 60 extra men are required to finish the work in time of 54 days.
Correct Option 4)